Fans are in almost universal agreement that "Indiana Jones and the Kingdom of the Crystal Skull" was a bit of a stumbling return for the series. Almost 20 years separate the 2008 release from the last Indy movie before it, "Indiana Jones and the Last Crusade," and the passed time shows. Regardless, star Harrison Ford is game to move on with more if there's a good reason. That's what he told MTV's Larry Carroll in an interview last Friday at the press junket for this week's release, "Extraordinary Measures."

"I think it would be interesting to advance the understanding of the character, as we always have had that ambition throughout the series," Ford said of his hopes for a "Crystal Skull" follow-up. "I think it would be interesting to deepen the relationship between he and his son [Mutt, played by Shia LaBeouf] and play on that relationship. ... It's full of opportunity. The series is full of opportunity."

It's been known for awhile now that series-runners Ford, George Lucas and Steven Spielberg have been kicking around ideas for more Indy. Ford himself admitted that the "Star Wars" creator had a "crazy but great" idea for a "Kingdom of the Crystal Skull" follow-up in a late 2008 interview with the Los Angeles Times.

Reminded of that interview on Friday and asked if he'd care to elaborate now, Ford responded with one of his trademark sly grins and an unequivocal response: "No."

After a moment's thought, he added, "Some of the best ideas are crazy ideas, you know? Well-wrought, well-manipulated."

Larry offered the hopeful possibility that we might see some of Indy's married life in a coming sequel, as "Crystal Skull" ended with the archaeologist marrying his "Raiders of the Lost Ark" sweetheart Marion Ravenwood (Karen Allen). Ford didn't seem terribly enthused by the idea.

"Yeah, yeah... really exciting," was his sarcastic response to the idea of watching Indy from behind a white picket fence. Getting serious, he did admit that such scenes would make for nice "grace notes." He ultimately avoided commenting much on the "Crystal Skull" plot development, beyond praise for his co-star. "Karen [Allen]'s a wonderful actress, I've always enjoyed working with her. I'm hoping that there'll be a part for all of us in the next one," he said.

For now, it's clear that future Indy thoughts haven't moved past the drawing board. Ford is optimistic that we'll see another one soon enough however. "I don't think I'll do it in a wheelchair. George [Lucas] is working on an idea, and if it comes to a fruitful stage, all of us are very interested in making another."

Where would you like to see Indiana Jones go next? Do you want Shia LaBeouf to come back? How about Karen Allen? Who would you like to see in the villain role? What undiscovered artifact should Indy hunt for next?